<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../js/jquery-1.11.3.js"></script>
</head>
<body>
<div>
    JavaScript
</div>
<script>
//$('div').css('color','#FF0000');
//$('div').css('backgroundColor','black');

//var s = $('div').css('color')
    $('div').css({

        'color':'red'
    }) ;
    $('div').css({

        'background-color':'black'
    });


</script>
</body>
</html>